JP3831835B2 - Packaging container - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a packaging container made of a synthetic resin film material in which a container body and a lid are integrally formed so as to be folded back via a hinge part, and mainly stores and sells food such as eggs and fresh fruits. The present invention relates to a single-use lightweight packaging container used in the case of.
[0002]
[Prior art]
As a disposable synthetic resin film container in which a container main body and a lid body are integrally formed so as to be folded back via a hinge part, it is widely implemented in egg containers and the like. In this type of container, means for joining the lid and the free end edge of the container body with staples, heat fusion, or adhesive tape is used to maintain the closed position of the lid. . However, such means requires tools and tape and is cumbersome to work, so in some cases, an engaging uneven part is formed on the free end edge of the lid and the container body, and this uneven part is fitted. Some of them have a structure in which the closed posture is maintained.
[0003]
[Problems to be solved by the invention]
However, in this type of packaging container, since the material itself is formed from a thin synthetic resin film having a wall thickness of about 0.3 mm by vacuum molding or the like, it is very flexible and has an engaging uneven portion. Since the fitting force due to the mold is weak and the fitting unevenness cannot be set large due to the mold removal allowance at the time of molding, there is a limit to the fitting force and it is difficult to reliably maintain the closed position. It was.
[0004]
Therefore, the present invention can be easily performed with a single touch when the lid is fitted to the container body, but securely holds the closed posture with a strong fitting force when the lid is closed. The main object of the present invention is to provide a packaging container made of synthetic resin film.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention takes the following technical means. That is, in the egg container according to the present invention, in a packaging container in which a rectangular container body 1 and a lid body 2 integrally formed from a synthetic resin film material are connected via a hinge part 3 so as to be folded back. The container body 1 and the lid body 2 are provided with horizontal surfaces 11 and 21 that face each other when the lid is closed, and the hinge portion 3 is provided on the short side of the rectangular shape, and is remote from the hinge portion 3 of the lid body 2. one engaging projection 22 or engagement recess 12 is provided on a level surface 21 in the center of the container width direction of the point, the horizontal surface 11 of the container body 1 which is opposed to the said horizontal plane 11, One engaging concave portion 12 or engaging convex portion 22 that fits into the engaging convex portion 22 or the engaging concave portion 12 is provided, and the head portion 22a of the engaging convex portion 22 is formed to have a slightly larger diameter. The engagement recess 12 is engaged with the large-diameter head portion 22a of the engagement projection 22 to be engaged. Katto portion 12a is provided, further startup piece 23 that rises upward is provided at the periphery of the three sides except the hinge portion 3 of the lid body 2, the peripheral edge 13 of the container body 1 the startup piece 23 when closed The periphery 13 is formed so as to cover the peripheral edge 13 in a state of being substantially in contact therewith .
[0006]
With this configuration, when the lid is closed, the engaging convex portion 22 and the engaging concave portion 12 are fitted like a hook, and at the same time, the rising piece 23 of the lid body 2 surrounds the peripheral edge 13 of the container body 1. Since the relative lateral displacement between the lid body 2 and the container body 1 is restricted, the engagement state between the engagement convex portion 22 and the engagement concave portion 12 can be stably maintained, and the lid 2 can be closed. It can be reliably maintained. In addition, since the peripheral edge 13 of the container main body 1 is covered and hidden by the rising piece 23 of the lid body 2, the peripheral edge portions of the container main body 1 and the lid body 2 turn over or jump up each other, and the engaging convex portion 22. Can be prevented from being weakened, and the appearance is also good.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The hinge part 3 is preferably formed by a plurality of narrow connecting bands. By doing so, when the lid 2 is folded back from the hinge portion 3 to the container main body 1, the paper can be completely folded in two, and the gap between the lid 2 and the container main body 1 can be reduced. In addition to eliminating the play at the hinge portion, it is possible to more stably hold the coupling posture between the lid 2 and the container body 1.
[0008]
【Example】
Hereinafter, the configuration of the present invention will be described based on the embodiment shown in FIGS. In the figure, the present invention is applied to a container for storing eggs, and a container body 1 integrally formed from a thin synthetic resin film material and the container body 1 can be folded back via a hinge portion 3. The lid 2 is connected. The hinge part 3 is formed of a plurality of narrow connecting bands.
[0009]
The container body 1 and the lid body 2 are provided with a plurality of storage recesses 15 for storing and storing eggs, and horizontal surfaces 11 and 21 connected to the upper edge of the opening of the storage recesses 15. Is provided. These horizontal surfaces 11 and 21 are formed so as to contact each other when the lid is closed.
[0010]
An engagement convex portion 22 is provided on a horizontal surface 21 at a remote point from the hinge portion 3 of the lid 2, and the engagement convex portion 22 is engaged with the horizontal surface 11 of the container body 1. A recess 12 is provided. A head portion 22a of the engaging convex portion 22 is formed to have a slightly large diameter, and an undercut portion 12a that engages with the large diameter head portion 22a of the engaging convex portion 22 is provided inside the engaging concave portion 12. Both are formed to fit like a hook. In the present embodiment, the engaging convex portion 22 is provided on the central horizontal surface 21 near the free end side of the lid 2, but the horizontal surface 21 adjacent to the free end side as shown in FIG. May be provided.
[0011]
Further, a rising piece 23 rising upward is provided on the three peripheral edges excluding the hinge portion 3 side of the lid 2, and the peripheral edge 13 is in a state where the rising piece 23 is substantially in contact with the peripheral edge 13 of the container body 1 when the lid is closed. It is formed to cover up.
[0012]
In the container configured as described above, when the lid is closed, the engaging convex portion 22 and the engaging concave portion 12 are fitted like a hook, and at the same time, the rising piece 23 of the lid body 2 is the peripheral edge of the container body 1. 13, the relative lateral displacement between the lid 2 and the container main body 1 is regulated so that the engagement state between the engagement convex portion 22 and the engagement concave portion 12 can be stably maintained. The 2 closed position is reliably maintained. Further, since the peripheral edge 13 of the container body 1 is covered with the rising piece 23 of the lid body 2, it is possible to prevent the peripheral edge portion of the container main body 1 from turning over or jumping up, and the appearance is good. Further, since the hinge portion 3 is formed of a plurality of narrow connecting bands, when the lid body 2 is folded back by the hinge portion 3, it is folded in two in a state in which the paper is folded in a completely folded state. The gap between the lid 2 and the container main body 1 can be eliminated, and play at the hinge portion can be eliminated, and the coupling posture between the lid 2 and the container main body 1 can be more stably maintained. .
[0013]
In order to make the rising piece 23 of the lid body 2 easily fit into the peripheral edge of the container body 1 when the lid body 2 is put on the container body 1, as shown in FIG. It is preferable to form it so as to be gradually inclined from the end adjacent to the portion 3 toward the free end side of the lid, but they may all be formed at the same height as shown in FIG.
[0014]
Moreover, in the said Example, although the small raising rib 14 for reinforcement was formed in the peripheral edge 13 of the container main body 1, as shown in FIG. 5, this raising rib 14 can also be abbreviate | omitted.
[0015]
As mentioned above, although the Example considered to be typical of this invention was described, this invention is not necessarily limited only to these Example structures. For example, the container which is the subject of the present invention is not limited to the form of the egg egg container shown in the above embodiment, but can be applied to a container for storing fresh fruits and other foods. Moreover, in the said Example, although the engagement convex part 22 was provided in the cover body 2 and the engagement recessed part 12 was provided in the said container main body 11, it is needless to say that it may be reversed. Further, the rising piece 23 raised and formed on the peripheral edge of the lid 2 may be formed on the container body 1 side. Further, it is assumed that the rising piece 23 is formed only on three sides . In addition, the present invention can be implemented with appropriate modifications within the scope of the present invention, achieving the object of the present invention, and providing the following effects.
[0016]
【The invention's effect】
As described above, in the present invention, while being molded with a thin synthetic resin film, by the engagement of one engagement convex part and the concave part and the covering of the container body peripheral edge by the rising piece of the lid peripheral part, Even with a rectangular container with a hinge portion provided on the short side, a strong fitting force can be maintained, and the lid and the container body can be securely held in the closed position. There is an effect that can be easily fitted with one touch.
[Brief description of the drawings]
FIG. 1 is a perspective view when a packaging container according to the present invention is opened.
2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is a cross-sectional view when the container is closed.
4 is a perspective view similar to FIG. 1, showing another embodiment of the present invention. FIG.
FIG. 5 is a perspective view similar to FIG. 1, showing still another embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Container main body 11 Horizontal surface 12 Engagement recessed part 12a Undercut part 13 of engagement recessed part 13 Perimeter 2 Lid body 21 Horizontal surface 22 Engagement convex part 22a Large-diameter head 23 of engagement convex part Rising piece 3 Hinge part

Claims (2)

  In a packaging container in which a rectangular container body (1) integrally formed from a synthetic resin film material and a lid (2) are connected to each other via a hinge part (3), the container body (1) And the lid (2) are provided with horizontal surfaces (11), (21) facing each other when the lid is closed, and the hinge portion (3) is provided on the short side of the rectangular shape, and the lid (2) One engaging convex part (22) or engaging concave part (12) is provided on the horizontal surface (21) in the center of the container width direction at the remote point from the hinge part (3), and the horizontal surface (11) On the horizontal surface (11) of the container body (1) opposite to the one, the one engagement recess (12) or engagement protrusion that engages with the engagement protrusion (22) or the engagement recess (12). A portion (22) is provided, the head portion (22a) of the engaging convex portion (22) is formed with a slightly larger diameter, and the engaging concave portion (12) has an engaging convex portion (22) in the inside thereof. There is an undercut (12a) with which the large-diameter head (22a) engages, and the hinge (3) side of the lid (2) is excluded. A rising piece (23) that rises upward is provided on the peripheral edge of the three sides, and the rising piece (23) covers the peripheral edge (13) in a state of being substantially in contact with the peripheral edge (13) of the container body (1) when the lid is closed. Egg container that is shaped to hide. The packaging container according to claim 1, wherein the hinge part (3) is formed of a plurality of narrow connecting bands.

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